The testimony of former inmate Abbie Will about Katie Allan’s death in the jail and the inadequacies of support for vulnerable prisoners almost justifies such a move on its own.

Yousaf’s decision to ask HMI to work with a mental health expert blows a hole in the arrogant assumption that the issue could be kicked into touch until a toothless fatal accident inquiry at a time of the establishment’s choosing.

The nebulous use of the FAI system to justify a failure to comment or provide answers thus far has been simply appalling.

HMP Polmont where a string of vulnerable prisoners took their own lives (Image: Daily Record)